Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Refrigerant Control Solenoid Valve: Description and Operation




A/C Refrigerant System Component Functions, Overview

A/C Refrigerant Shut-off Valve -N43-








The flow of refrigerant to the second evaporator (where applicable) is controlled by valve -N43-. The valve opens (refrigerant flow) when voltage is applied by A/C control head -E87-.

On models with Climatronic, function of valve is monitored by On Board Diagnostic (OBD).